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Hey gear heads,
I am wondering if i can use 12au7 and 12ay7 pre-amp tubes with my Bogner Alchemist Head?
I guess the real question is what other tube options do i have other than 12ax7/ecc83 and 6l6/5881
Much Appreciated.

I'm a sound noob so go easy on me. Played a line 6 processed amp for many years now, including Helix for the past year. Tonight went over and plugged into my friends Marshall. Had a hard time playing for awhile as it seemed like all my note timing was off with my fingers. Had read on here that using a processed digital amp like a Helix, you have a latency that your brain/fingers adjust for and that latency isn't there with a pure tube amp.
Accurate or no?
And if accurate, do any of you who use the Helix as your pedal board via a four cable method with a tube amp experience this?

Q: Is Biasing covered under warranty?
A: Typically not. It should be considered as part of the routine maintenance in keeping your amplifier at its peak performance. However, if re-biasing is required as part of other warranty service, it will be covered under the warranty policy.
Q: My tubes are not working (i.e. not lighting up, no output, etc).
A: Check the following:
Make sure the tube is firmly seated in the tube socket
Other tube situations:
My tubes make a popping sound accompanied by intermittent light from tubes - the tube is failing and needs to be replaced.
The appearance of 'white frost' inside the tube - the tube has cracked and it must be replaced.
General Guideline for Replacing Tubes: Always replace power amp tubes with matched set(s) every 12-24 months depending on the amount of use, and have the bias checked and/ or adjusted by an Authorized Line 6 Service Center.
Preamp tubes (such as the two 12AX7s) only need to be replaced when they are microphonic (ringing sound from tubes when tapped), noisy, or damaged.

Application
Q: What are the presets on my Spider Valve Mk II amplifier?
A: There are 64 presets (16 banks of 4) programmed into the amplifier at the factory, and 64 â€œemptyâ€� preset locations for an end user to program. The â€œemptyâ€� 64 preset locations have defaults (1-4) in them as a starting place.
Q: I noticed that the Artist/Song Presets from the Spider IV are not present on the Spider Valve Mk II?
A: Yes, as many end users had asked for more locations to store their personal presets, we have removed the artist/song presets for the Spider Valve Mk II.
Q: Are the Spider Valve Mk II series amps Mono(phonic)?
A: Yes, the Spider Valve Mk II series amplifiers have a monophonic output (as are most tube amplifiers).
Q: How can I connect a POD unit to my Spider Valve Mk II series amplifier?
POD Connections, Routing and the 4 Cable Method
Q: Do the Master volume and presence control applied to the power amp section only?
A: Yes, the master volume and presence control are true analog.
Q: Where is the Master volume located in the chain?
A: it is after the preamp, and before the power amp.
Specifications
Q: What are the specifications of the Spider Valve Mk II series?
Spider Valve Mk II Specifications
Q: What speakers are used in the Spider Valve Mk II amplifiers?
Spider Valve 112: Celestion Vintage 30, 8 ohm
Spider Valve 212: (2) Celestion Vintage 30s, 16 ohm
Spider Valve 412 cabinet: (4) Celestion Vintage 30s, 16 ohm
Q: What tubes ship in the Spider Valve Mk II amplifiers? What is the power output?
Spider Valve Mk II 112 & 212: (2) Sovtek 12AX7B preamp tubes, (2) Sovtek 5881/6L6WGC power amp tubes. 40 watts.
Spider Valve Mk II HD: (2) Sovtek 12AX7B preamp tubes, (4) Sovtek 5881/6L6WGC power amp tubes. 100 watts.
Q: What are the function of the 12AX7 tubes?
A: V1 is the booster to the output tubes, V2 is the phase inverter for the output tubes. When viewing the SV MKII HD100 upright from the back, V1 is on the right side. On the combo, V1 is on the left side.
Q: Can the Spider Valve Mk II handle another 12A_7 style tube without damage to tubes or circuitry?
A: Yes, but as these tubes act as a phase inverter and a boost to the power amp (rather than traditionally "cleaning up" the preamp section), you may not get the result you are looking for.
Q: What Line 6 controllers work with the Spider Valve Mk II series amplifier?
Controller compatibility chart
Setup/Connection
Q: Is there a bias switch to change the power tubes to EL-34s or other power tube types?
A: No, the Spider Valve Mk II does not offer bias switchable options and was designed to only be used with 6L6 power amp output tubes.
Q: Is there a headphone output on the Spider Valve Mk II series?
A: There is no headphone output on the Spider Valve Series, but you can use the XLR output to go to a mixer, then use the headphone jack from the mixer.
Q: Can I run my Spider Valve Mk II amplifier without a speaker load?
A:No, you cannot run the Spider Valve Mk II series without a speaker load. Please see the following link for more information on cabinet connections:
Cabinet Connection and Ohm F.A.Q.
Q: Can the Spider Valve Mk II be run with a Variac?
A: This is not recommended as the lower voltage can cause problems with the digital processing in the Preamp section of the Spider Valve Mk II.
Q: Can I run a Palmer S.E., THD Hot Plate, Power Soak, etc. for speaker simulation or power attenuation?
A: There are no known issues regarding the use of any direct recording simulators or power attenuators between the power amp output and the speaker cabinet, but if there is damage caused by improper connections or malfunctioning gear it will not covered under the Line 6 warranty.
Q: Do the Spider Valve Mk II 112 and 212 combos support external speaker cabinets? If so, will the external cabs mute the internal speakers of the Spider Valve Mk II?
A: Yes, the Spider Valve Mk II supports the use of additional cabinets. Please ensure that the ohm load is correct to avoid damaging your amplifier if you intend to use both the internal and external speakers simultaneously.
Q: What is the bias voltage for the Sovtek 5881WXT tubes?
A: 35 mV (+/-2mV)
Q: Does the XLR output still send signal when the amplifier is on standby?
A: In some cases yes, in some no. Spider Valve MkII actually has two different modes of Direct Out, which can be found in the SETUP menu in Edit Mode. They are Studio and Performance. Studio mode is a traditional, DSP POD-style output with speaker simulation and will function when the amplifier is in standby mode. In contrast, Performance mode takes a tap off the output transformer, then goes through the speaker simulation before going through the Direct Out. This allows the tubes to interact with the DSP, and because the amp has to be on to allow this to happen, there will be no signal at the XLR output in standby if Performance mode is selected.
Q: Does the Spider Valve Mk II have an FX loop?
A: the Spider Valve Mk II has a pre-amp out (effect send) and Power amp in (effect return) section.
Q: Is the effect loop series or parallel? Is the effect loop mono or stereo?
A: The effect loop is series mono.
Q: Does the Spider Valve Mk II have MIDI ports?
A: Yes, the Spider Valve Mk II amplifier series has both MIDI in and MIDI out ports, and the Spider Valve Mk II will accept MIDI program changes on MIDI Channel 1-16, from values 00-127. The MIDI channel assignment can be accessed by pushing the â€œpresetâ€� encoder and using the left/right arrow key to reach â€œMIDIâ€�. This greatly increases the opportunity to integrate Spider Valve MkIIâ€™s into your existing rig, and will also allow you to update your amps firmware via MIDI. See the advanced userâ€™s guide for the full MIDI story.
Q: Can I send a MIDI output from the Spider Valve Mk II to another MIDI-capable Line 6 amplifier and control both amplifiers with one FBV controller?
A: Yes, but as different Line 6 amplifiers have different MIDI implementation you will want to go through each control on the FBV to ensure that you get the desired control on both units.
Q: Is there an editor where I can connect my Spider Valve Mk II to my computer and edit/store tones?
A: Yes, Spider Valve Edit is the editing software that can be used to edit the Spider Valve Mk II. Please see the following link for more information:
Spider Valve Edit FAQs
Q: What do the FBV Shortboard series stomp, FX Loop/Function 1, and Function 2 do?
A: The Stomp button activates the "boost" on both the original FBV shortboard series (Mark I) and Mark II controllers. The FX Loop (Mk I)/Function 1 (Mk II) activates the Noise gate. The Function 2 (Mk II only) activates the loop feature on the Spider Valve Mk II.
Q: What do the FBV Shortboard MkII Function 1 and Function 2 buttons do with Spider Valve MkII? How is it different from the original FBV Shortboard?
A: The Function 1 button activates the Boost setting saved with each preset. The Boost setting (up to 8db pre and/or post amp model) can be found by entering â€œedit modeâ€� on the SV MkII and pressing the R arrow on the 4-way nav button. The button equivalent to Function 1 on the original FBV Shortboard is labeled FX Loop.
The Function 2 button (FBV Shortboard MkII only) is equivalent to the Quick Loop button on the faceplate of the SV MkII, and arms the built in Looper. For full functionality of the Looper, see the Spider Valve MkII Advanced User Guide. In addition, the Stomp button activates the first Smart FX on both the original and MkII FBV Shortboard controllers.
Q: Can I run the Spider Valve Mk II head with only the outer two power tubes (removing the inner pair) to operate at a lower output volume?
A: Yes, it is safe to run the Spider Valve Mk II Head with two 6L6s. It is recommended that the output impedance be run at "half" when running in this configuration. An example would be running the 8 ohm head output connected to the 16 ohm cabinet connection, or the 4 ohm output to an an 8 ohm cabinet connection. Line 6 recommends re-biasing your amplifier to 35mv after removing the tubes, as the current draw will have changed.
Q: Where is the fuse located in the chain?
A: The fuse is located between the 12AX7s and 6L6s (there is no â€œmasterâ€� fuse).
Spider Valve Cabinet FAQs
Q: What are the specs for the Line 6 4x12 cabinet?
A: 9 ply, Â¾â€� wood with Celestion Vintage 30 speakers. There is no â€œinternal baffleâ€�.
Q: What are the ohm load options for the 4x12 cabinet?
A: The switchable ohm load options for the 4x12 cabinet are 16 ohm mono, 8 ohm stereo, and 4 ohm mono.
Trouble shooting
Q: What is the manufacturerâ€™s warranty for Spider Valve Mk II?
A: The warranty for the Spider Valve Mk II amplifier is 12 months from the date of purchase, the tubes warranty is 90 days from the date of purchase.
Q: How do I perform a factory reset on my Spider Valve Mk II?
A: The factory reset for the Spider Valve Mk II series is to hold the "A" button while powering the unit, then pushing the â€œpresetsâ€� encoder twice.
Q: I hear a loud "pop" when I switch between certain presets on the Spider Valve MKII. Is this normal?
A: Sometimes if the Channel Volume is set or saved too low on a preset a loud pop will be heard when navigating to it and away from it. This is because of the level difference between it and the other saved presets. Try adjusting the preset's Channel Volume above "12:00" and saving again. This should level out the difference between the presets and eliminate the popping sound.
Q: Will using different brands of 6L6 tubes in the Spider Valve Mk II void the warranty?
A: No, feel free to experiment with other tubes of the same type as long as they are correctly biased.
Q: My amp seems to be malfunctioning. What can I do as an end user?
Amp Troubleshooting
Tube Troubleshooting and Replacement
*Q: Where can I download a Spider Valve Mk II manual?
Line 6 Manuals
Miscellaneous
Q: Where can I get a cover for my Spider Valve Mk II amplifier?
Cases And Covers

I was in rehearsals the other day with my Helix expecting to go straight into a desk but the sound engineer wasn't around to get things running, however there was a line 6 spider bogner collab amp on the stage so I decided to plug into it. I then realised it had a Preamp out and power amp in section on the back. I think i plugged into the Preamp hoping to bypass the amp completely and just for the helix to be amplified. It actually sounded great without turning my amp sims off. This has confused me though! Did the amp just become a speaker or would it have coloured the sound?

I am using a POD HD 500X and a DT50 Head. I had tried the POD alone, but was dissatisfied with the "modeled" amp tones (I've always used a Mesa Boogie Rectifier, and am partial to a real "tube" tone. That's why I purchased the DT. I plugged directly into the DT, and using topology 4, was able to get an awesome heavy tone. Chunky. Tight. Very little noise. Awesome. So I set up the POD HD500X using the L6 link. Starting with a new (empty) patch, I tried to recreate that same sound I got by plugging directly into the DT. It seems that my choices are:
1) to use the Angel F-Ball model (using channel A), or
2) to use no amp model, which sends it to channel B.
BOTH are unsatisfactory. (1) Using the model, it doesn't have the same warmth and clarity as if I'd plugged directly into the tube amp. And its VERY noisy!! (2) Using channel B, I need to turn up the output of the HD 500 all the way to get the same gain as if I'd plugged straight into the head. Or turn up the mixer in the HD signal chain all the way. This method is also very noisy. And in this way, I'd be limited to just one tone...whatever I have channel B set to. And woud also have no way to boost for leads.
To make sure it wasn't my imagination, I have tested both ways, back and forth. I plugged into the DT directly - sounds amazing, crunchy, and no noise. I plug into the POD HD500X connected to the DT via L6 - noisy and mediocre tone.
I bought the two so I could have a nice tube sound, but also be able to change between tolologies/gain amounts/effects configurations all in one click of the pedal. What do I need to do differently to get the same great tube sound I get from plugging directly into the DT, only using the POD, using the POD to change topologies, effects, etc?
Thanks,
Tim

Application
Q: What are the presets on my Spider Valve amplifier?
A: The user presets and artist/song presets for the Spider Valve are listed as attachments at the bottom of this document (please be aware that they are identical to the Spider III with the exceptions notated in the document). The Spider Valve user presets are the 36 user-programmable presets. The artist/song presets location cannot be saved, but you can modify and/or store these setting in the 36 user-programmable presets. If you would like to return your unit to the original presets, please perform a factory reset.
Q: I noticed that some of the Artist/Song Presets from the Spider III are not present on the Spider Valve?
A: Yes, some of the Artist/Song Presets from the original Spider III release were not included in the Spider Valve release due to space restrictions (please compare the two lists for clarification).
Q: Are the Spider Valve series amps Mono(phonic)?
A: Yes, the Spider Valve series amplifiers have a monophonic output (as are most tube amplifiers).
Q: How can I connect a POD unit to my Spider Valve series amplifier?
Connecting to Amps and Computers, Output Settings, Floorboard Compatibilty, Fletcher Munson, Multiple Amps
Q: Do the Master volume and presence control applied to the power amp section only?
A: Yes, the master volume and presence control are true analog.
Q: Where is the Master volume located in the chain?
A: it is after the preamp, and before the power amp.
Specifications
Q: What speakers are used in the Spider Valve amplifiers?
Spider Valve 112: Celestion Vintage 30, 8 ohm
Spider Valve 212: (2) Celestion Vintage 30s, 16 ohm
Spider Valve 412 cabinet: (4) Celestion Vintage 30s, 16 ohm
Q: What tubes ship in the Spider Valve amplifiers? What is the power output?
Spider Valve 112: (2) Sovtek 12AX7LPS preamp tubes, (2) Sovtek 5881/6L6WXT power amp tubes. 40 watts.
Spider Valve 212: (2) Sovtek 12AX7LPS preamp tubes, (2) Sovtek 5881/6L6WXT power amp tubes. 40 watts.
Spider Valve HD: (2) Sovtek 12AX7LPS preamp tubes, (4) Sovtek 5881/6L6WXT power amp tubes. 100 watts.
Q: What are the function of the 12AX7 tubes?
A: V1 is the booster to the output tubes, V2 is the phase inverter for the output tubes. When viewing the amplifier from the back, V1 is on the left side on the combo and the right side on the head.
Q: Can the SV handle another 12A_7 style tube without damage to tubes or circuitry?
A: Yes, but as these tubes act as a phase inverter and a boost to the power amp (rather than traditionally "cleaning up" the preamp section), you may not get the result you are looking for.
Q: What Line 6 controllers work with the Spider Valve series amplifier?
Controller compatibility chart
Setup/Connection
Q: Is there a bias switch to change the power tubes to EL-34s or other power tube types?
A: No, the Spider Valve does not offer bias switchable options and was designed to only be used with 6L6 power amp output tubes.
Q: Is the effect loop series or parallel? Is the effect loop mono or stereo?
A: The effect loop is series mono.
Q: Is there a headphone output on the Spider Valve series?
A: There is no headphone output on the Spider Valve Series, but you can use the XLR output to go to a mixer, then use the headphone jack from the mixer.
Q: Can I run my Spider Valve amplifier without a speaker load?
A:No, you cannot run the Spider Valve series without a speaker load. Please see the following link for more information on cabinet connections:
Cabinet Connection and Ohm F.A.Q.
Q: Can the Spider Valve be run with a Variac?
A: This is not recommended as the lower voltage can cause problems with the digital processing in the Preamp section of the Spider Valve.
Q: Can I run a Palmer S.E., THD Hot Plate, Power Soak, etc. for speaker simulation or power attenuation?
A: There are no known issues regarding the use of any direct recording simulators or power attenuators between the power amp output and the speaker cabinet, but if there is damage caused by improper connections or malfunctioning gear it will not covered under the Line 6 warranty.
Q: Do the 112 and 212 combos support external speaker cabinets? If so, will the external cabs mute the internal speakers of the SV?
A: Yes, the Spider Valve supports the use of additional cabinets. Please ensure that the ohm load is correct to avoid damaging your amplifier.
Q: What is the bias voltage for the 6L6 tubes?
A: 35 ma (or mv)
Q: Does the XLR output still send signal when the amplifier is on standby? Is there an FX loop? MIDI ports?
A: The XLR Direct Out (which is a POD-style output with speaker simulation) will function when the amplifier is in standby mode.The Spider Valve has a pre-amp out (effect send) and Power amp in (effect return) section. There are no MIDI ports on the Spider Valve series.
Q: What do the FBV shortboard stomp, FX Loop/Function 1, and Function 2 do?
A: The Stomp button activates the "boost" on both the original (Mark I) and Mark II shortboard. The FX Loop (Mk I)/Function 1 (Mk II) activates the Noise gate. The Function 2 (Mk II only) has no function on the Spider Valve.
Q: Does the FBV controller (long board) work any differently that the other FBV controller switch the Spider Valve series?
A: The FBV controller (long board) work just like the other controllers, but there are numerous buttons that will have no functions, such as the Stomp 2/3 buttons, tremolo, and favorite channel.
Q: Where is the fuse located in the chain?
A: The fuse is located between the 12AX7s and 6L6s (there is no â€œmasterâ€� fuse).
Spider Valve Cabinet FAQs
Q: What are the specs for the 4x12 cabinet?
A: 9 ply, Â¾â€� wood with Celestion Vintage 30 speakers. There is no â€œinternal baffleâ€�.
Q: What are the ohm load options for the 4x12 cabinet?
A: The switchable ohm load options for the 4x12 cabinet are 16 ohm mono, 8 ohm stereo, and 4 ohm mono.
Trouble shooting:
Q: What is the manufacturerâ€™s warranty for SV?
A: The warranty for the Spider Valve amplifier is 12 months from the date of purchase, the tubes are warrantied for 90 days from the date of purchase.
Q: How do I perform a factory reset on my Spider Valve?
A: The factory reset for the Spider Valve series is to hold the "A" button while powering the unit.
Q: Will using different brands of 6L6 tubes in the Spider Valve void the warranty?
A: No, feel free to experiment with other tubes of the same type.
Q: My amp seems to be malfunctioning. What can I do as an end user?
Amp Troubleshooting
Tube Troubleshooting and Replacement
*Q: Where can I download a Spider Valve manual?
Line 6 Manuals
Miscellaneous
Q: Where can I get a cover for my Line 6 amplifier?
Cases And Covers
Q: In the manual's explanation of how to save patch and perform 'NAME EDIT' with the FBV shortboard: Page 45, it states to use the 'COMP' & 'MOD' button to select one of the characters of the channel name. I don't see a COMP button, what should I use?
A: Please use the 'STOMP' & 'MOD' button to select the characters from left to right. This was an error in the manual due for revision.

Hi guys,
I'm currently running my Helix in 4CM with my Victory Sheriff 22, and getting great tones! I'm now looking to add a Suhr Reactive Load into the mix!
The plan is:
Guitar -> Helix Guitar in
Helix Send 1 -> Sheriff Input
Sheriff Send -> Helix Return 1
Helix 1/4 Out -> Sheriff Return
Sheriff 8ohm Speaker Out -> Suhr Reactive Load -> Helix Return 2 (set to Line level) -> USB Out to Macbook
Path 1, would contain my tone related blocks (effects etc), input set to guitar in, and output set to 1/4 Out.
Path 2, would contain a Cab/IR, input set to Return 2, and output set to USB.
My question is, should this work? Am I at risk of damaging anything in this way? It would be the ideal home recording solution for me.
Any help would be massively appreciated! :)
Cheers guys!

Has anyone tried John Dale's "delay shelving" technique on a Helix? He calls it a "filter mod." His technique
is for the Yamaha THR10 mini-amp, and I tried it on my THR10C (the bluesy, classic rock version of that same amp) and it is amazing on that amp. Really kills a lot of the "transistor sound," and produces more of a "tube sound." Like always, not exactly a tube sound, but really close...
I tried it today with my Strat (Fender N4 pickups) and Helix, with the WhoWatt 100 Amp/Cab and Transistor Tape Delay selected, using various very short (0.8 ms) delay, ~70% feedback, ~50 mix, and got basically the same results. Delay before amp, after amp, cascaded delays, with/without distortion, experimenting like that.
It sounds to me to be better than "EQ shelving," because it sounds like there are still some high freq harmonics coming through, along with the "thicker sound." I always hate giving up the Strat "quack" for thicker tone, and this method seems to produce both. It's like I have much heavier strings--my actual strings are 9-11.5-15-26-32-38, so really very light.
I have to be honest though, I can never trust my ears much for this sort of thing--too many years around jet engines. But it does sound good to me. Cascading delays in this way produces lots of other effects of course, like phasing, flanger, Roto-Vibe, etc, but that's what all of these are anyway, just various modulated delays. This single tape delay, however seems to produce a "string-thickening" effect...
I feel foolish posting this--I can't be the first on this forum to try this, but I could find no post that discusses this technique. So if there are relevant posts, I will humbly apologize and join that thread...

First about me. I played for thirty five years. Owned almost every Marshall, Mesa, Fender + a lot of boutique amps ( Matchless, Bad Cat +++) Liked most of them, but Guitarist always want something new, right?
Also worked for over 15 year selling guitars and amps.
Now the Helix.
While the Helix is my favorite toy and more than satisfying in my studio, I only used it as a pedalboard in live situations. ItÂ´s by far my best and most versatile pedalboard ever :-)
Let me also mention that i do not use stereo setup live.
My Problem:
While some of you like it the FRFR thing does not work for me. Tried Line6, EV, Yamaha and other brands but i dont like the "miked" sound.
My Solution:
I stumbled over a old forgotten Mesa Boogie. The Simul Satellite. Made in the early 90Â´s for use with the Mesa Mark IV for a stereo setup. ItÂ´s like having a 112 cab with a built in power amp. And you can use it as a singel channel amp as well. It is Perfect for my needs. While most tube amps bypass the tonestack when using the effect return the Mesa Simul Satellite have a 5 band footswitchable eq + presence and a master volume. Switchable from 90w down to 15w
The one i got also have the EV12L speaker. IMHO the best speaker ever..200w and clean no matter what i put in to it. To my ears it does not color the sound like my V30, Greenback ++ This is of course a matter of taste.
Cons: With the 8.6 kg EV12L speaker it is a bit on the heavy side.( Not more than a quality 12" PA speaker) Have to choose between 6L6, EL34 or 6V6 tubes.( Can also mix 6L6 and EL34)
Pros: ItÂ´s a tube amp made for the use of the effect loops!! Amp sounds good alone, and take pedals were well. Compact size. 15w to 90w . The EV12L sounds good from bedroom level to stage level. Can gig with only one amp, using different preamps in the Helix.
Now i have the Helix amp simulations as a Backup for the Mesa, and my Tech 21 fly rig 5 as a backup for the backup.
Hope this can help others "old school" BluesRock players like me out there searching...

Hi Folks. My first post here.
I have been researching the Helix as well as the AX8.
I am 32, been playing tube amps for 12 years now. I have a lollipop pedal board because I am too cheap to overpay the ridiculous pedal train asking price. I find that no matter what tube amp i have(I've had a lot) there are always limitations with how i channel switch and use effects.
I am in a gigging modern high gain metal/rock band and I am looking to simplify my rig. Currently, I am running this setup:
Guitar=>pedal board(tuner, decimator, overdrive, flashback delay)=> laney ironheart=>mesa cab.
What i am trying to understand, is whether I can replace my current rig with this:
Guitar=>Helix=>poweramp=>mesa cab.
My BIGGEST concern, is TONE. I want that great tube tone I've gotten out of my amps. I don't want the positive grid bias sound or the pod sound.
I don't see many people using the Helix as their sole guitar tone source(aka no tube amp).
Before I buy a Helix, should I feel confident in the setup I am proposing and the sound I am hoping to capture?
Are there any limitations that I should be aware of?
What would be a good power amp for this rig?
Thanks much for any insight you can provide me.
Also, here is my band to represent the tone I am going for.
[youtubevid}
[endyoutubevid]

DT50 212 --- amp went out on me after about 2 months, a quick gurgle as tubes burned out ... then nothing. Thusly, I looked at the tubes ... the EL's were glowing bright, 12AX7's were out. Went to Guitar Ctr and after being assured they'd work, I got the Groove Tube russian brand. I would avoid chinese brands also. Russian just seems better sounding to me. Easy to replace and took about 1 minute of careful pressure to install. Unplug too ... duh?! LOL.
I immediately noticed that the factory 'hiss' was nearly gone (like 90%), and the sound was more colorful. I looked online and noticed the EH stock brand was much cheaper than the GT brand.
As well, each topology was more defined. 3 and 4 are now my fav's. Wonder how the sound will be if I replace the EL's with a high quality brand?
Bribrew

DT25 Voicing&Class settings for LongTubeLife
Can anyone tell me if the voicing and/or class settings on the DT25 are any harder or easier on the tube life of the amp? That is: if I had every patch play Class A/B Pentode, would that shorten tube life compared to Class A Triode? or viseversa?
Does switching back and forth voice/class settings stress the amp or tubes?
After getting my amp back from service, my tubes were factory replaced and re-biased, sounded glorious, but tubes are wearing out after <100 hours. I set all patches to Class A/B Pentode and tubes are EH
I bought a stash of EH replacement pre's and power tubes. I can just plunk those in and expect to be up and running. Right?

I recently bought this amp, and have it paired only with the POD HD500X.
Suddenly, Channel B has lost its 'oomph'. Identical knob/topology settings b/w Ch.A & B yields a pronounced difference in volume and low end, with B sounding 'tinny'.
This is universal, guitar direct or Line6 Link.
Tube problem? Other?

Hi, i have an issue. i got the Line 6 hd500x processor along with the Grandmeister 36 by HughesundKettner but by mistake for the next few day iÂ´m with the Tubemeister 36 (in case you need to know).
I tried the amp without the processor and after that i connected the processor with the 4 cable method.I want to use the processor only for effects although i the future i will probably see how good are the simulations : ).So the problem is that after i plugged the processor i tried some presets for 10 minutes and then i touched the ampÂ´s knobs and buttons, and nothing works,the buttons light up in their color when i change the channels and there is no difference, i touch the volume,high,mid,low knobs - nothing, the reverb knob on the back of the amp head, still, nothing. i can adjust only the master volume from the processor. And the main reason is (maybe you will find it funny) i want to see if the tube amp has the same sound with the processor plugged in, i want to have a clean connection between the guitar and the amp with the processor plugged in, and have the hughesundkettner exact sound, and then after that,over that sound to add effects,, knowing that hughesundkettner is ther (im not some crazy fan, i just think that the amp sounds really sweet)
Anyways, nothing moves and i hope i didnt do something right,I have no idea if there is special option whenever i want to use only the preamp of my tube amp or the whole amp in its natural sounding, or i just have to disable the amp from the screen (i literally wasted the last one hour trying to figure out why when i connect the processor with the 4 cable method (i didnÂ´t try other method) is my amp "frozen".maybe the processor is using only the power amp of my amp,but i turned every effect from the processor OFF, and still nothing.
Thanks
Anthony.

My DT25 head has started blowing the tube protection fuse.
This happens shortly after i turn it on.
I have noticed the following before it happens:
1. I turn on the amp.
2. wait for a minute or two.
3. The amp starts making crackeling noice and one of the power tubes starts glowing brightly (like it has a hot spot all orange)
If I don but it in standby at this spot, then the fuse blows.
Do I have a faulty amp or do I just need to replace the power tubes ?
Any help is greatly appreciated.

Hi, I've just got my FX100 and I was wondering if there is a way I can get the sound of a tube or a tube screamer: there doesn't appear to be any in the presets - unless I'm getting it wrong!
Thax,
Paul

Hey Guys,
I've been searching high and low for a proper step by step,instructional kinda video/manual, for biasing the tube power section for the Line 6 DT50, but to no avail.
I think it's high time, the forum have something like this in place so we can do the maintenance ourselves. Last i check, it cost nearly the price of a single tube to send it to the amp tech for biasing...
:-(
Hope any guru out there can help? =)

Hi, I need some advice to match my Spider III 4x12 cab with a Krank Rev Jr Pro. The spider cab has two 8ohms inputs running in stereo and the left side input running 4 ohms in mono, my amp has a 16/8 ohms switch, i would like to know if it will be rigth to connect my amp with the swiitch in 8 ohms, to the right side of the spider cab, will this deactivated the left side of the spider cab, letting me use the 8 ohms side of the cab?
thanks for your help!

I've been reading about the volume issues with the DT50 212. Too loud, etc. Before I say anything else its the real deal amp. I'm blown away with the HD500 integration. The Solo models are to die for!!!!
Here's what I do to deal with volume issues:
Each amps output can be set to the expression pedal without using DSP. Watch
for how to do this. I've taken my amps/tones and used this technique to lower the overall volume (around a maximum value of 50-60) while keeping the master volume on the high power position (pushed in). Keep the master at about 12 o'clock (or what you like) and use the output settings to level each amp (patch) to each other and to lessen the output. This can be done with dual tones as well, just set both amps to similar parameters, and same expression pedal.
Do you lose sound? At 50-60 ... no on most amp models. Some amp models lose slightly, but low volume is merely, usually practice.
Is this the perfect fix? Probably not. However, your amp/patches will be leveled, properly loud, and get full use of channel volume and master volume mixes.
When playing live a quick touch on the master can work wonders.
Let me know how this works out if you try it. His advice (see link above) for wah pedals is spot on too.
If its too loud ... move! LOL Happy jamming!
bribrew1968

Q: What is the difference in power rating between tube and solid-state power amplifiers?
A: Tube power outputs can peak 200 to 400% above solid-state, so a 50watt tube power amp can output a volume equivalent to a 100-200w solid-state amplifier output.
Q: What are the common Preamp tubes?
A: The 12AX7 (ECC83 is the European term, or the military term of 7025) is the most common preamp tube for driving the Gain and EQ sections of the amplifier, as well as driving the signal into the power amps.
The following tubes have a lower power rating and can be used in the preamp section or other amplifier functions such as the reverb tank drivers, inverters, etc.
12AT7 (ECC81, 6201): 60% power of the 12AX7
12AU7 (ECC82, 5963): 19% power of the 12AX7
12AY7 (6072): 45% power of the 12AX7
Q: What are the common power amplifier tubes?
6L6 (5881/KT66): Commonly used in American amplifiers such as Fender, Mesa, Peavey. Typically has more low-end emphasis.
EL34 (6CA7/KT77): Commonly used in British amplifiers such as Marshall. Typically has more midrange emphasis.
EL84 (6BQ5): Commonly used in Vox , Gibson, Matchless, and Bad Cat amplifiers
6550 (KT88): Commonly used in VHT, Ampeg SVTs, and Leslie Speakers cabinets. Typically has more power output than the other tubes listed here.
Q: What other power amp tubes are compatible with the Spider Valve?
A: Line 6 stresses using 6L6 (5881/KT66) power amp tubes only. Other power amp tubes such as 6550's can draw too much power and damage your amp and void your warranty.
Q: How long should I let tubes "cook" after biasing before I measure again?
A: The standard cooking time is 3-6 hours after an initial bias (regardless of the tube age).